The popular online bookmarking and scrapbooking service Pinterest is reportedly in talks with investors to raise a new round of funding. According to The Wall Street Journal, sources have told it that the potential round has the company valued at between $2 billion and $2.5 billion.

Pinterest has raised $138 million from several notable investors including Andreessen Horowitz, FirstMark Capital, Rakuten, Ron Conway, and Max Levchin. In its last round of funding, it was valued at $1.5 billion. Most recently, SV Angel took part in a $30 million secondary sale investment in Pinterest.

With this valuation, Pinterest is a part of a growing group of technology companies that have extraordinarily high valuations, including Evernote, Airbnb, SurveyMonkey, and Spotify.

comScore has reported that Pinterest has more than 28 million users in December 2012, up from 7.5 million a year ago. What has been causing this huge spike in users? TNW’s Brad McCarty reported that Pinterest’s rapid rise to popularity was due to its appealing nature towards the female audience.

We’ve reached out to Pinterest for comment and will update this if we hear back.